Lithonia Lighting ALSMR16 400L DIM M60 1 1 1 400 Lumen 2700K MR16 Dimmable LED Light Bulb, Gray High quality, cast aluminum, advanced thermal design for optimal cooling efficiency Uses high brightness LED and is dimmable down to 10% Operating temperature is from -22 Degree to 104 Degree 24 degree beam angle Damp location listed